Arcam PA240 - Page 23

EN-23
ISSUE
DRAWING NO.
DRAWING TITLE
DATE
Filename:
ECO No. DESCRIPTION OF CHANGE
L288 CT4 Micro.SchDoc
AMP024 MCU
Contact Engineer:
L288CT
16/12/2020
INITIALS
Printed:
4 4Sheet of
Notes:
Contact Tel: (01223) 203207Peter Kuell
A & R Cambridge Ltd.
Pembroke Avenue
Cambridge CB25 9QR
Waterbeach
A3
ARCAM
SS BYP
PA SHORT*
DC OFFSET
SS BYP
LIFT TEMP T1/AC FAIL*
PA TEMPL
PA SHORT*
DC OFFSET
A0
1
A1
2
A2
3
SDA
5
SCL
6
WP
7
IC301A
24C02
GND
4
VCC
8
IC301B
24C02
DGND
+3V3 MCU
SDA
SCL
0W063
R309
2K2
0W063
R308
2K2
+3V3 MCU
DGNDDGND
50V
C304
100N
SDA
SCL
INPUT_SEL
50V
C310
100N
50V
C309
100N
50V
C308
100N
50V
C307
100N
6.3V
C306
10UF
DGND
+3V3 MCU
0W063
R323
10R
50V
C315
100N
+3V3 MCU
DGND
6.3V
C316
10UF
DGND
RG15
1
RE5
3
RE6
4
RE7
5
RC1
6
RC2
7
RC3
8
RC4
9
RG6
10
RG7
11
RG8
12
RG9
14
RA0
17
RE8
18
RE9
19
RB5
20
RB4
21
RB3
22
RB2
23
RB1
24
RB0
25
RB6
26
RB7
27
RA9
28
RA10
29
RB8
32
RB9
33
RB10
34
RB11
35
RA1
38
RF13
39
RF12
40
RB12
41
RB13
42
RB14
43
RB15
44
RD14
47
RD15
48
RF4
49
RF5
50
USBID/RF3
51
RF2
52
RF8
53
Vbus
54
Vusb3v3
55
D-/RG3
56
D+/RG2
57
RA2
58
RA3
59
RA4
60
RA5
61
OSC1/RC12
63
OSC2/RC15
64
RA14
66
RA15
67
RD8
68
RD9
69
RD10
70
RD11
71
RD0
72
RC13
73
RC14
74
RD1
76
RD2
77
RD3
78
RD12
79
RD13
80
RD4
81
RD5
82
RD6
83
RD7
84
RF 0
87
RF 1
88
RG1
89
RG0
90
RA6
91
RA7
92
RE0
93
RE1
94
RG14
95
RG12
96
RG13
97
RE2
98
RE3
99
RE4
100
IC300A
PIC32MX795F512L-80I/PF
TX EN
TX D0 TX D1
RX D0
RX D1
RX ER
CRS DV
MDC
MDIO
VSS
15
VDD
2
AVDD
30
AVSS
31
VSS
36
VDD
16
VDD
37
VSS
45
VCAP
85
VDD
46
MCLR*
13
VDD
62
VSS
65
VSS
75
VDD
86
IC300B
PIC32MX795F512L-80I/PF
REF CLK
NET INT
50V
C311
100N
50V
C312
100N
DGND
TX EN
TX D0 TX D1
RX D0
RX D1
MDC
MDIO
CRS DV
REF CLK
NET INT
USB_N
USB_P
USB_N
USB_P
VBUS EN
VBUS EN
PA TEMPR
PA TEMPR
LIFT TEMP T1/AC FAIL*
PA TEMPL
50V
C302
33P
50V
C303
33P
DGND
TRIGGER OUT*
P309
TRIGGER INPUT
DGND
TRIGGER IN
3V0
DZ300
BZX84C
0W25
R316
10K
0W25
R315
1K0
P303
P304
DGND
0W25
R317
3R3
0W125
R319
100R
TR300
TIP31C
50V
C313
100N
DGND
0W063
R322
4K7
P308
P305
P307
P306
P310
0W25
R318
1K0
DEBUG CLK
DEBUG DATA
+3V3 MCU
DGND
+3V3 MCU
MCLR*BLUE ICD pin 6
YLW ICD pin 5
GRN ICD pin 4
RED ICD pin 3
BLACK ICD pin 2
MCLR
VDD
VSS
PGC
PGD
0W063
R326
10K
+3V3 MCU
LIFT TEMP T2
LIFT TEMP T2
RS232 RX
RS232 TX
RS232 TX
RS232 RX
DEBUG
SETTINGS E2
TRIGGER OUTPUT
50V
NPO
C314
22P
DGND
50V
NPO
C305
22P
TRIGGER OUT*
DEBUG CLK
DEBUG DATA
TRIGGER IN
3
10
1
23
22
21
L
R
L
R
11
2
HSJ1003
SKT300
HOSIDEN
X300
8MHz
0W063
R304
33R
0W063
R305
33R
50V
C300
33P
50V
C301
33P
DGND
DGND
RED LED
GREEN LED
1
2
3
4
5
6
M20-973
CON300
HARWIN
0W063
R320
10K
0W063
R321
10K
+3V3 MCU
DGND
MODEL
0W063
R301
10K
0W063
R300
10K
NF
DGND
SKU
0W063
R313
33R
0W063
R314
33R
+3V3 MCU
0W063
R310
33R
0W063
R311
33R
MCU BIAS 1
MCU BIAS 2
VCC
RST
GND
IC302
LM809M3-3.08
+3V3 MCU
DGND
0W063
R327
100K
NF
MCLR*
NF
NF
50V
C317
100N
SS EN
SS EN
0W063
R325
0R0
CH GND
RX ER
NF
DGND
DGND
GAIN SW
31dB
25dB
Gain switch controls RLY103, 104 & 106.
Allows gain to be reduced when using the amp in
mono mode to allow for user to have 2 x mono L/R to
drive bass with a stereo for tweeters for example
SW1 controls RLY101 & 105.
Switches between the balanced XLR and single ended phono inputs
INPUT_SEL
DGND
0W063
R307
10K
0W063
R306
10K
MODE
Mode switch controls RLY100, 102, 107 & 108.
Allows amp to be configured in stereo (0V), bridged
mono (1.65V) or dual mono (3.3V) configuration
XLR
RCA
STEREO
BRIDGED
DUAL MONO
P300
+3V3 MCU
+3V3 MCU
+3V3 MCU
+3V3 MCU
GAIN SW
MODE
GAIN 25 XLR BRIDGED
MONO
0W063
R312
33R
WHITE LED
BRIDGED
MONO
GAIN 25 XLR
IP DET*
IP DET*
GREEN LED
RED LED
WHITE LED
MCU BIAS 3
BIAS SEL
BIAS SEL
MCU BIAS 1
MCU BIAS 2
MCU BIAS 3
RS232 RX
50V
C318
33P
50V
C319
33P
DGND
TX D0 TX D1
+11V
TR301
MMBTA06L
TR302
MMBTA06L
3
2
1
SW300A
OS102011MA1QN1
SCR1
SCR2
SW300B
OS102011MA1QN1
3
2
1
SW301A
OS102011MA1QN1
SCR1
SCR2
SW301B
OS102011MA1QN1
4
2
3
1
SW302A
OS103011MA7QP1
SCR1
SCR2
SW302B
OS103011MA7QP1
DANTE EN
DANTE RESET*
DANTE EN
DANTE RESET*
DANTE PRES*
DANTE PRES*
MUTE KEY*
STBY KEY*
DANTE RX
DANTE TX
DANTE RX
DANTE TX
DANTE/PIC* RS232
MODEL:
0 - 2 channel
1.65 - 4 channel
3.3 - 7 channel
NF
SPK MUTE
RCA/XLR*
RCA/XLR*
SPK MUTE
DANTE/R CA*
DANTE/XLR*
SKU:
0 - Arcam
1 - Lexicon
GAIN 25 RCA
GAIN 25 RCA
STBY KEY*
MUTE KEY*
16V
C320
470UF
NET PSU EN
NET PSU EN
P302
P311
P312
P301
P313
P316
P317
P321
P320
P318
P319
P323
P322
P314
P315
P324
P325
0W063
R302
10K
DGND
19_E007 JH 12/02/2019 G.0Net name changes
DANTE/PIC* RS232
19_E027 PK 17/04/19 1.0None to this sheet
0W063
R324
0R0
PA SHORT*
0W063
R328
0R0
0W063
R303
0R0 NF
19_E040 PK 02/12/19 2.0PCB change only
20_E038 PK 08/09/20 2.1None to this sheet
20_E050 PK 16/12/20 3.0None to this sheet